/*
 *
 gcc SDL_test_font.c showtxt.c testtimer.c -lmingw32 -lSDL2main -lSDL2 && a
 gcc testtimer.c -lSDL2 -lSDL2_ttf -lSDL2_mixer -lSDL2_image && ./a.out
 adb push testtimer.c /sdcard/
 Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>

 This software is provided 'as-is', without any express or implied
 warranty.  In no event will the authors be held liable for any damages
 arising from the use of this software.

 Permission is granted to anyone to use this software for any purpose,
 including commercial applications, and to alter it and redistribute it
 freely.
 kiss my 
 */

/* Test program to check the resolution of the SDL timer on the current
   platform dug
   holy shit
   the real snow

*/

#include <stdlib.h>
#include <stdio.h>

#include "SDL2/SDL.h"

#define DEFAULT_RESOLUTION  1

static int ticks = 0;

static Uint32 SDLCALL ticktock(Uint32 interval, void *param)
{
    ++ticks;
    return (interval);
}

int w=240;
int h=320;
char * show_str;
SDL_Renderer *renderer;

static Uint32 SDLCALL callback(Uint32 interval, void *param)
{
    show_str = append_str(show_str,"Timer %d : param = %d\n", interval, (int) (uintptr_t) param);
    draw_str(renderer,0,0,show_str,w,h);
    return interval;
}


int main(int argc, char *argv[])
{
    show_str = get_text();
    int i, desired;
    SDL_TimerID t1, t2, t3;
    Uint32 start32, now32;
    Uint64 start, now;

    renderer = init_();

    /* Enable standard application logging */
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);

    /* Start the timer */
    desired = 0;
    if (argv[1]) {
        desired = atoi(argv[1]);
    }
    if (desired == 0) {
        desired = DEFAULT_RESOLUTION;
    }
    t1 = SDL_AddTimer(desired, ticktock, NULL);

    /* Wait 10 seconds */
    show_str = append_str(show_str,"Waiting 10 seconds\n");
    draw_str(renderer,0,0,show_str,w,h);

    SDL_Delay(10 * 1000);

    /* Stop the timer */
    SDL_RemoveTimer(t1);

    /* Print the results */
    if (ticks) {
        SDL_Log("Timer resolution: desired = %d ms, actual = %f ms\n",
                desired, (double) (10 * 1000) / ticks);
    }

    /* Test multiple timers */
    show_str = append_str(show_str,"Testing multiple timers...\n");
    draw_str(renderer,0,0,show_str,w,h);
    t1 = SDL_AddTimer(100, callback, (void *) 1);
    if (!t1){
        show_str = append_str(show_str,"Could not create timer 1: %s\n", SDL_GetError());
        draw_str(renderer,0,0,show_str,w,h);
    }
    t2 = SDL_AddTimer(50, callback, (void *) 2);
    if (!t2){
        show_str = append_str(show_str,"Could not create timer 2: %s\n", SDL_GetError());
        draw_str(renderer,0,0,show_str,w,h);
    }
    t3 = SDL_AddTimer(233, callback, (void *) 3);
    if (!t3){
        show_str = append_str(show_str,"Could not create timer 3: %s\n", SDL_GetError());
        draw_str(renderer,0,0,show_str,w,h);
    }

    /* Wait 10 seconds */
    show_str = append_str(show_str,"Waiting 10 seconds\n");
    draw_str(renderer,0,0,show_str,w,h);
    SDL_Delay(10 * 1000);

    show_str = append_str(show_str,"Removing timer 1 and waiting 5 more seconds\n");
    draw_str(renderer,0,0,show_str,w,h);
    SDL_RemoveTimer(t1);

    SDL_Delay(5 * 1000);

    SDL_RemoveTimer(t2);
    SDL_RemoveTimer(t3);

    start = SDL_GetPerformanceCounter();
    for (i = 0; i < 1000000; ++i) {
        ticktock(0, NULL);
    }
    now = SDL_GetPerformanceCounter();
    show_str = append_str(show_str,"1 million iterations of ticktock took %f ms\n", (double)((now - start)*1000) / SDL_GetPerformanceFrequency());
    draw_str(renderer,0,0,show_str,w,h);

    show_str = append_str(show_str,"Performance counter frequency: %llu\n", (unsigned long long) SDL_GetPerformanceFrequency());
    draw_str(renderer,0,0,show_str,w,h);
    start32 = SDL_GetTicks();
    start = SDL_GetPerformanceCounter();
    SDL_Delay(1000);
    now = SDL_GetPerformanceCounter();
    now32 = SDL_GetTicks();

    show_str = append_str(show_str,"Delay 1 second = %d ms in ticks, %f ms according to performance counter\n", (now32-start32), (double)((now - start)*1000) / SDL_GetPerformanceFrequency());
    draw_str(renderer,0,0,show_str,w,h);


    free(show_str);
    SDL_Delay(2000);

    SDL_Quit();
    return (0);
}

/* vi: set ts=4 sw=4 expandtab: */
